Social Studies, 07.10.2019 22:00, foxesforlife45

Aresearcher is interested in studying the effect of orange juice on test performance. she will evaluate the test performance of students who drink the juice a half-hour before the test against the performance of students who receive nothing to drink before the test. the groups are equivalent in terms of demographics, intelligence, and prior college classes. in this example, the orange juice would be the
a) dependent variable.
b) independent variable.
c) control variable.
d) comparison control.

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Aresearcher is interested in studying the effect of orange juice on test performance. she will evalu...